Carbureting apparatus for internal-combustion engines



Apr. 24, 1923.

W. L. ONEILL CARBURETING APPARATUS FOR INTERNAL COMBUSTION ENGINES Filed June' 27. 1917 Imemfor r flflatmys.

I Patented Abe; 24, 1923, r BESTAVAILABLE. COPY TESL. PATENT or1=icafj UNITED sTA D. ONEILL, or balance, ILLINOIS, assleuon 'ro s'rn omnnno moron DEYIGES COMPANY, 01 CHICAGO, JILLINOIS, A CORPORATION OF ILLINOIS.

' means for'purifying the entering air which constitutes'one ofthe elements of the combustible mixture. a

V -Whereinternal combustion. engines are used under conditions in which there iscon- 2 siderable' dirt, sand, mlneral matter, and

' other solid impurities in the atmosphere, as

in the cases of automobile and truck en- I. ines on dusty.- roads and "tractorengines-on V usty fields, the, air, going into the carbu- 2!!v retor in response to'the suctionof the engine'will be charged with such solid impurities,-unless .means is provided vtoclean it preliminarily. The harmful efit'ectofsuch loaded air in the engine cylinders is well I known and devices have heretofore been provided to clean the air, some by screening-it and others .by gravity separation. 'The de vices of the formerclass are notsatisfactory, since the screensinterfere with the free flow of air, ""particularly,"' when they become 1 clogged. My invention relates to devices .of the latterclassand has to do-withim- I vproved means for dumping the collected solid impurities; --It isthe objectiof m 'inefi'ective manner than has heretofore been thecase'and in such a .way that it does not entail theynecessity of stopping the engine,- 4 or even the v'ehicle, for the urpose or cause even a temporary harmful how of solid impurities' to. theengineeven thou h the enine operates. during such dumping. action; v n addition,':I-g also provide a structure in" 0' which the dumping action may be be secured by actuation from a'di'stance from the carburetor, as from thevdnvers position of a ve h1- I cle, or some other convementplace, In a simple and 'efiective' manner, and 1n which the accumulation may v be automatically dis- Application fled June 27,

.vention to provide means for securing this 1 dumping action in a more simple andv 'CARBURETINQAPPAMTUS FOR INTERNAL-COMBUSTIQN ENGINES.

1917. Serial in. 177,160.- 7

charged directly to ,the ground or to any other desired-point.

I also provide means for heating the simultaneously with the purifying action.- This'relationship is important not only because of. the fact that both functions may be performedin a single structure, but also because the agitation of the air during the air cleaning action makes it especially suscep tibleito the efficient and uniform absorption ofheat; r

The purifying action is accomplished by providing a casing forming a chamber and intake passagewaysentering andrleaving saidchamber in such amanner that, a; dead air space is formed in one part of the ing to the-carburetor. The solid impurities into the dead air space where they come to accumulation may discharged.

My invention-is illustrated in the accom- I panying drawing which illustrates-an embodimentthereof 'inside elevation; 7

As illustrated, a portion of the intake pipe 10 of the-carburetor'll may be extended, as indicated at 12, into an expanded funnelfrom time'to time be shaped chamber 13,, from which depends a' cylindrical portion 14. In the form of the device shown the portion 14 has secured thereto a cylindrical casing 15 of such size thata passageway 16 is left between the inner wall ofsaid casing 15 and the outer wall of the cylindrical portion 14; The casing 15 is extended downwardly in a conical portion 17which passes the lower edge .18 of the cylindrical portion 14 so as to leave'anarrow annular passageway 19. entirely between said lower edge 18, and the inner wall of the conical ortion 17. The portionl is open at the ottom but-has mounted therein a disk 20 which is 'of a size smaller than the interior of cylindrieal'portion 14 so as to leave an annular passageway 21 between the portion 14. The conical portion 17 may be further'extended, as indicated at 22, to form chamber, and the air currents ,directed 1 through the passageways will make asharp turn away from said dead air space in pasare thus separated out of thea'ir current; and j rest and-accumulateand from whichjsaid edge of said disk and the inner walls of the' an outlet pipe .23 which--- forms acollec'ting' pocket;v tthe. bottom theoutletp'pe 23 is completes the collecting pocktl valve normally closed by the Ivalve24 which thus; I

. coming current of air far as, t point in BEST AVAILABLE COPY 24 is pivoted at 25 in a suitable bracket 26. A strong spring 27 tends to hold the valve closed and-a suitable gasket 28 may be provided on the valve face'in order to secure adequate closing of, the outlet pipe. The valve 24 is alsoprovided with an operating lever 29, whereby the valve may readily be opened manually from a distance, as from the position of the driver of a vehicle, through the intervention of the operating, wire 30.

Airb is admitted through apertures 39 below the flange 15'.

into passageway 16 in the casing 15 just In operation, the air at maximum velocity will pass through the annular passageway 19, and in its further travel will be compelled to make a short turn about the lower edge 18 of the cylindrical portion 14 from which it will pass through the annular passageway 21 and on. into the inlet pipe 10 and 12. The particles of dirt, rit, etc., will travel with the'air as e annular-passageway '19, at that a direction parallel to the conical wall 17 from which point said particles will continue under the momentum gained from their movement with the air, taking the direction of the dotted arrows and passing into the dead air space of outlet pipe 23 where said particles will come to rest. These particles will thus be separated from the inand the air promptly ing the collection to drop out. In such action, however, it is rangement equal. opened, as in desirable that there be no flow, or at least any appreciably harmful flow of air upward through the outlet pipe 23 and to the engine, since such a flow of air would not only be impurified but would carry with it a large amount of the undesirablc collection of solid impurities, defeating the very purpose of the device. It will be seen, of'course, that 'such undesirable action could be avoided by stopping the engine so that there will be no suction, but it. is obviously undesirable also to stop the engine. I have, therefore, providedthe following ar- The outlet pipe 23 is expanded at between the conical portion 17 and the valve 24 in order to form the annular valv seat-31. A valve 32 is arranged to cooperate with this seat, this valve being hung loosely from .a suitable cross bar 33 by means of the stem 34 and the nut 35.

\Vhen thevalve 24 is closed the valve 32 remains open, as shown, of its ownweight, the pressure on opposite sides thereof being When, however, the valve 24 is the discharging action, atmosf pheric pressure is admitted to the underside stood, of course,

. would then be when the valve 24 is c bodymg of the valve 32, immediately closing it. due to the suction on the opposite side thereof. Thus, even though the momentarily, while the engine is running, to discharge the collected impurities, the outlet pipe is closed above the collected impurities, thus preventing an inward flow through the outlet pipe tages, as above pointed out.

As just described, the operation of the valve 32 is entirely automatic. closed whenever air comes in past the valve 24, and it will be noted that it is precisely that occurrence which effects the closing. Therefore the maintenance of the outlet pipe in closed condition, by one valve or the other, is always assured. It will be underthat the precise forms of the two valves are not important so long as their functions are performed.

owever, I do not contemplate a broader aspect, also, in that it may be desirable to substitute a manually operated valve for the automatic valve 32. Of course its operation elective but it will be seen that with such a valve and the valve '24 the collected impurities could be discharged without opening the outlet pipe. upper valve would be closed first and then the lower valve would be opened and closed, and then the upperwalve would be opened again.

It will appear that the the valves 32 and 24 is o tional. Of course, osed, the annular space around the valve 32 is open and is entirely adequate to allow the dropping impurities to pass by and collect on top of the valve 24 is openedv Thus the distance between with its consequent disadvan- It should be valve 24. It is merely required that there be such capacity between the two valves as not to require discharge too often. There may also be quite a considerable distance be tween the two valves; the pipe 23 may, in fact, be lengthened and fashioned to lead to any desirable discharge point. It will be clear that the valve 24 is held on its seat not onlly by spring pressure but by suction as we I It will be noted that I provide a heating jacket 36 surrounding the chamber, in which purification takes place". This jacket has the inlet 37 and the outlet 38, the former being connected with the engine exhaust so that the chamber and its contents may be heated by the exhaust gases simultaneously with the purification of the contents.

I claim:

'l. The combination with a carburetor having an inlet pipe and adapted to beconnected toan internal combustion engine so pipe in response to the suction of the engine, of a casing connected with said plpeand ema separating compartment and a dead. air

compartment for the reception of solid impurities, an outlet for said dead compartment, a normally closed valve forsaid outlet, and means between said compartments permitting the passage of impurities to said dead air compartment when said valve is'closed and automatically operable when said valve is o-penedto prevent the re-' turn of said impurities to said separating compartment, I a

2. The combination with acarburetor having an inlet pipe and adapted to be connectedto an internal combustion engine so that air will be caused topassthrough said pipe in response to the suction of the'engine of a casing connected with said pipe and embodying a separating compartment and a dead air. compartment for the reception of .solid "impurities. an outlet for said dead air compartment a normally closed valve for said. outlet, and means between said compartments permitting the passage of impurities tosaid dead air compartment when said valve is closed and automatically operable when said valve is opened to prevent the return of said impurities to said separating compartment.

3. The combination with a carburetor having an inlet pipe and adapted to be connected to an internal combustion engine so that air will be caused to pass through said pipe in response to the suction of the enfllne of a casing connected with sald pipe and embodying aseparating compartment and a dead air compartment for the reception of solid impurities, an outlet for said (lead air compartment. a normally closed valve for said outlet, and a check valve normally open topermit the passage of impurities to said dead air compartment when said outlet valve is closed and automatically operable to close upon opening said outlet valve to prevent return of said impurities to said separating compartment.

4. The combination with a carburetor having an inlet pipe and. adapted to be connected to an internalcombustion engine so that air will be caused to pass through said pipe in response to the suction of the engine, of acasing connected with said pipe and embodying a separating compartment and a dead air compartment for the reception of solid impurities, an outlet for said dead air "compartment, a normally closed valve for said outlet. and a normally open inwardly closing check valve between said'compa-rtments automatically operable to close when said outlet valve is opened.

, The combination with acarburetor having an inlet pipe and adapted to be connected to-an internal combustion engine so that airwill be caused to pass through said pipe in response to the suction of theen-gine of a casing connected with said'pipe and embodying a separating compartment and adead air compartment for the reception of compartment.

- 7 a BEST AlVA ltABLE COP-Y solid impurities, anolitlet for said'dead air compartment, a normally closed, springpressed, outwardly opening "a-lve for said outlet, and a second normally open valve between said compartments for permitting, the passage 0t impurities to said dead air compartment whensaid outlet valve is closed and automatically operable to close off said dead air compartment from said separating compartmentwhen said outlet valve is opened. v a

6. In combination. an air intake pipe for connection to the carburetor (if an internal combustion engine, a chamber connected therewith through which air in response to the engine suction is adapted to pass, means providing a dead air space below said chamin response to the engine suct-ion'is adapted to pass a dead air space below the chamber and normally in communication therewith. anautomatically suction operated valve between the dead air space in said chamber normally permitting communication there between. a valve in the. bottom of said dead air space normally in closed position. and manual means for opening said latte-r valve for discharging the contents of the dead air s )ace. 1 8. The combination with asource of suction, of a casing embodying a separating compartment and a dead air compartment for the reception of solid impurities, an outlet for said dead air compartment. a norm ally closed valve for said outlet, and means between said compartments permitting the free passage of impuritiesJto saiddead air compartment when said valve is closed and automatically operable to prevent the return of said-impurities .to said separating compartment when said-valve is opened.

9. The combination with a source of suction, of a casing embodying a separating compartment and a dead air compartment for the reception of solid impurities, an outlet forsaid dead air compartment, a normally-closed valvefor said outlet, and a normally open check valve between said compartments automatically operable to close when said outlet valve is opened to prevent the impurities returning tosaid separating T30 for the separating compartment only.

10. The combination with a source of succlosed, a partition across I necte ing impurities therefrom,

compartment, and a dead air compartment, an outlet for said dead air compartment, a

. normallyclosed manually operated valve for said outlet, and a second normally open suction closed check valve for forming. when said dead air compartment. N

11. In a separator for use-with an internal combustion enginethe combination of a separating chamber adapted to be subjected to engine suction,

a dead air chambernormally communicating therewith for receiva normally closed outlet for said dead air chamber, aclosure for said outlet and a suction controlled means for preventing return of said impurities to said separating chamber when said closure is' opened. 4

'12. The combination with acarbureter havin an inletpipe and adapted to be con- (i to an internal combustion engine so that air will be caused to pass through said pipe in response to the suction of the engine, a casing connected with said pipe and embodying a separating compartment and a dead air compartment for the reception of solid impurities, means for isolating said compartments at times, and a heating jacket 13. The combination of a carbureter having an inlet pipe and adapted to be connected I to an internal combustion engine so that'ai J ment at times, and a heating jacket for the will be caused to pass through said pipe in response to the suction of the engine, a casing connected withsaid a separating compartment and a dead air compartment for the reception of. solid impurities, means for isolating said compart pipe and embodying BEST AVAILABLE COPY separating compartment only and connected to the exhaust manifold of the engine' 14. The combination with a carbureter having an inlet pipe and adapted-to be conrnected to an internal combustion engine so that air will be caused to pass through said pipe in response to the suction of the engine, a casing connected with said pipe and embodying a separating compartment and a dead air compartment for the-reception of solid impurities, an outlet for said dead air compartment, a normally closed valve for remote point, and a I '15. In combination with a carburetor hav- 7 ing an inlet pipe and adapted to be connected to an internal combustion engine so that air will be caused to pass through said pipe in response to the suction of the engine, a casing connectedwith said pipe and embodying a separating compartment and a dead air compartment for the reception'bf solid 1 impurities, an outlet for said dead air compartment, a pivotally swinging for closing said outlet and arranged'to open outwardly therefrom, a member having gular movement operatively connected with said valve, connecting means for swinging said member from a remote point, and a.

second normally open valve for when closed, compartment.

In witness whereof, I hereunto subscribe my namethis 25th day of June, A. D. 1917.

WILLIAM L. ONEILL.

forming,

flap valve a partition across said dead air 

